PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-1 Life expectancy: Not specified Hematopoietic: Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 2 mg/dL SGOT or SGPT no greater than 4 times normal Renal: Creatinine no greater than 2.0 mg/dL Cardiovascular: No active ischemic heart disease (i.e., NYHA class III or IV cardiac disease) No myocardial infarction within past 6 months No history of congestive heart failure No ventricular arrhythmias or other arrhythmias requiring therapy Other: HIV negative No hepatitis B or C infection No active infection requiring antibiotics No history of autoimmune disease (e.g., autoimmune neutropenia, thrombocytopenia, or hemolytic anemia; systemic lupus erythematosus, Sjogren syndrome, or scleroderma; myasthenia gravis; Goodpasture syndrome; Addison's disease, Hashimoto's thyroiditis, or active Graves' disease) No active second malignancy other than curatively treated carcinoma in situ of the cervix or basal cell carcinoma of the skin Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception